Re: Gray Balance and Rip Linearization
Re: Gray Balance and Rip Linearization
- Subject: Re: Gray Balance and Rip Linearization
- From: Terry Wyse <email@hidden>
- Date: Mon, 29 Nov 2004 01:22:47 -0500
Steve, it's really pretty simplE. First off, while there are "standard"
gray balance numbers for commercial and publication offset printing
like the ones you mentioned (50/39/39 is also common), there is no
right or wrong numbers in an absolute sense, it's really whatever the
press profile defines as gray for the print conditions it was made for.
If you want to check gray balance, simply separate a neutral RGB file
where R=G=B with a known good press profile (USWebCoated(SWOP)v2.icc or
USSheetfedCoated.icc to name two) and proof the image using this SAME
profile in your Best Colorproof RIP as the reference profile. The main
thing is to use the same profile you separated with (destinatation
profile) as your source/reference profile in the proofing RIP.
Regardless of what the gray *values* are in the file, this should
reproduce as gray on the proof. Simple!
Terry
On Nov 28, 2004, at 7:24 PM, steven kornreich wrote:
I have been working with Best Color Rips for about four years now. I am
running there latest 5.01 version of both Color Proof and Photo
Edition.
They both of course use best's new linear tool which automatically
determines ink limits, etc.
My question is first off what is a good cmyk reference file to print to
check how well my gray balance is. I have seen different cmyk gray
scale
test files but they all have different cmyk values on what is gray.
I.e..
C50m m40, y40 K20 or something like that. With that being said, even
if gray
balance is off a little bit, wouldn't my printer profile correct for
this?
In this case I am using Print Open 5 to generate my printer profiles.
I assume the better I get best to output a good gray scale would be
best but
I am not sure.
_____________________________
WyseConsul
Color Management Consulting
email@hidden
704.843.0858
http://www.colormanagementgroup.com
http://www.wyseconsul.com (coming soon)
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